CAJ | 학술논문

多载荷AUV在分离运动时，通过进水以增加其负浮力，从而实现分离要求，故进水过程的研究与分析具有重要的应用价值。采用LES与VOF相结合的方法对多载荷AUV后平衡舱空腔的进水过程进行了数值模拟，考察了进水孔直径、进水孔位置以及航行深度等因素对进水过程的影响。结果表明：进水孔直径越大，进水速率越大，但气泡脱离孔口所需的时间越长；由于尾部收缩段的存在，在内外压强作用下，进水孔水平间距越小，进水速率越大，且到达气液两相平衡状态时空腔内进水体积越大；航行深度越大，承受的静水压力越大使得空腔到达气液两相平衡状态的时间越短。
다재하AUV재분리운동시，통과진수이증가기부부력，종이실현분리요구，고진수과정적연구여분석구유중요적응용개치。채용LES여VOF상결합적방법대다재하AUV후평형창공강적진수과정진행료수치모의，고찰료진수공직경、진수공위치이급항행심도등인소대진수과정적영향。결과표명：진수공직경월대，진수속솔월대，단기포탈리공구소수적시간월장；유우미부수축단적존재，재내외압강작용하，진수공수평간거월소，진수속솔월대，차도체기액량상평형상태시공강내진수체적월대；항행심도월대，승수적정수압력월대사득공강도체기액량상평형상태적시간월단。
Through the injection of water we increase the weight and achieve the requirements of separation during the separation movement of multi?load AUV ( autonomous underwater vehicle) . It can be seen that the research and analysis of the process of water injection into AUV is helpful. The numerical simulation of process of water injection into AUV was done with LES (Large Eddy Simulation) coupled with the VOF (Volume of Fluid). The effects of the diameter of water injection hole, the location of water injection hole and the depth of water were investigated. And the results and their analysis show preliminarily that three preliminary conclusions can be drawn as started in section 4 of this paper;the three conclusions are briefly:(1) the larger the size of diameter of water injection hole is, the greater is the rate of water injection, but the longer is the time required for air bubbles to detach from the hole;(2) due to the existence of the contraction of the tail section, the closer the distance between the two water injection holes is, the higher is the rate of water injection and the greater is the water volume injected into the mod?el;(3) the greater the depth of navigation is, the shorter is the time needed to reach the equilibrium state.